air
antibacterial
background
black
blackboard
care
caucasian
class
classroom
concept
corona
disease
doctor
education
epidemic
equipment
female
flu
glove
green
health
hygiene
lamp
lesson
light
medical
medical mask
medicine
new normal
nurse
problem
protection
quarantine
safety
school
scientist
sign
sterilizer
stethoscope
study
teacher
teaching
tool
ultra
ultraviolet
uv
virus
white
woman
定額
Doctor showing an ultraviolet lamp in a casing for air disinfection in a school classroomの素材 [FY310157511703]
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